Machine for forming seamless tubes.



C. P. HIGGINS. MACHINE PQR PORMING SBAML'ESS TUBES. APPLICATION FILED SEPT. 21, 1906..

3 SHEETS-SHEET 1,

Paname@ y,me 14, 1910.

C. P. HIGGINS. MACHINE POR'PORMING SEAMLBSS TUBES. APPLICATION FILED SEPT.Z1,1906.p

3 SHEETS-SHEET z.

wfg/4? Patented Jun 14,1910.

0. P. HIGGINS. MACHINE FOR FORMING SEAMLESS TUBES.

APPLICATION FILED SEPT. 21, 1906.

Patented June 14, 1910.

3 SHEETS-SHEET 3 v A44 Arron/veri UNITED sTATEs 4PATENT oEEIoE. i

CAMPBELL 1P: HIGGINS, OF ROSELL, NEW JERSEY, AASSIGF'NOR T'O'THE BABGOK & WIL- COX COMPANY', OF BAYONNE, NEW JERSEY, A CORPORATION 0E NEW JERSEY.

' MACHINE FORMING SEAMLSSS TUBES.

To all whom it `may concern:

Be it known that I, CAMPBELL P. HIGGINS, a citizen of the United States, residing at Roselle, in the countyof Union and State of NewJersey, have invented certain new A and useful Improvements in Machines for Forming Seamless Tubes, of which the following is a specification, reference being had therein to the vaccompanying drawing.

This invention relates to machines for forming seamless'tubes from metal blanks progressively and in a continual pass by means of a series of movable male and Astationary female dies.

The present .invention comprises holders carrying the movable male dies adapted to swing upon the frame-work lof the machine for the purpose of locating'theblank to be operated upon, and an auxiliary means for sustaining the holder when the latter is swung to its' outward position.

In the accompanying drawings forming a 'part of this specification, a machine is illustrated which includes the series of movable male dies and stationary vfemale dieswlIich are referred to in detail in my separate application filed September 21, 1906, Serial Number 335,669, and also the devices for centering the plate to be operated upon.

Figures 1 and 2 are front views in elevation of the machine-showing the connection therewith of the'swinging die holders. Fig. 3 a top view of the machine showing die swung out to receive piece to be operated upon. Fig. 4 a view on line 4 4, Fig. 2,

' showing the die holder swung into center.

Fig. 5 a sectional plan through line 5--5, Fig. 2. Fig. 6 a detached portionshowing supporting cylinder for dies. Fig. 7 a side` elevation partly in section. Fig. S anenlarged sectional elevation of a plunger and cylinder forming part of the machine. F ig.

9`is a vertical section of the machine.

In .the several views, like parts ,are identified by like numerals.

The male dies 15 and 16 are carried on upper and lower swinging holders 13 and 14, the larger die 15 being carried by the upper holder 13, and the smalle"v die 16 by the lower holder'14. The smaller die 16 is telescoped within the larger. Y

The die holders are niounted upon the side supporting standards 17 and 18 that connect the base of the machine with its top in Which the stationary female dies are placed,

Specioation of: LetxersPatent.

tral position in Fig. 2.

Patented J une 14, 1910.

.andare adapted slide upon said' standards and also toswing to one side, as shown in Fig. 6, sutlicient to clear the'frame-work of the machine and to place the blank upon the end of the male dies.

The male dies are shown in position `for receiving the blank before the drawing operation inF ig. l of.the drawing, and in cen- In the plan View Fig. 3 the male die holder 13 islshown swung toits outward position for receiving the blank, and in Figs. 4 and A5 the power devices for swinging the die holders13 and 14 are shown.

The devices for connecting the swinging holders are shown inl Figs. 2, 7 and 9.

The upper holder 13 carrying the large male die 15 is secured to the tubular bearing 2l, which latter turns vand also slides upon the standard 17 and is constructed with an arm 22 that projects outside .thestandard 17. As shown in Fig. 7, two parallel rods 23 are secured to the arm 22 which extend to and are rigidly secured to a bracket 24 placed upon the bearing tube 21 directly-beneath the lower die holder 14, which bracket rises with theholder 13 in its sliding movement. The lower die holder' 14 is also provided with a projecting arm 25 on its pivoted side in which a pin 26 isrigidly secured .that depends therefrom and engages an aperture in an arm 28 )rojecting Afrom and swinging on the standard 17. i

rIhe die holders 13 and 14 are ma lein triangular shape, as shown in the plan .I ews, and providedwith brackets and semicircular clasps 29- to engage with a standard 18 'opposite their pivotal connections on 17, as

shown in Figs. 2 and 7, and in their respcctiveopen and centered positions in Figs. 3 and 4. y

` A hydraulic cylinder' 30 is secured to the base block` 6, F 4 and. 5, and' provided with a piston rod 31 which imparts a swinging movement to the die holders 14 and 13 through link 32, swinging arm 28, pin 26,

. and arm 25".

In Figs. 6 and 7 an auxiliary hydraulic cylinder 34 and plunger 35 is shown secured to the base 6 of the machine. The upper endv side of the bracket 24, which is mounted upon the' tubular bearing 21. As the lower die holder 14 approaches the uppe die holder 13 the piston 35, acting through .of the plunger 35 engages with the under Y holder is swung back., by a reverse pressure bracket 24 and sleeve 21, forms a support for the die holder -13' when the latter-is deprived of other support.

As shown in Figs. 1 and 2, arms 39 are pivoted to the top of the machine in which the stationary dies. are placed. These arms are actuated by power cylinders 38 preferably hydraulic which are also secured to the top of the machine. When power is applied to the cylinders 38 the arms 39 close together simultaneously about the blank on the maledie l5 to center it with the dies.

The complete operation of the machine is in `the cylinder 30, thereby returning the dies to theirnormal position in the machine. vPower is now applied to the hydraulic cyl# inders 38 operating the centering arms 39, andthe blank is centered as clearly shown in Fi 2. Pressure is now applied tothe power by Letters Patent isg `male die.

cylinder 44, which raises the plunger 4l and die holders 13 and 14until thelarge'r die 15 has 'forced the plate through the'lower female die. The'smalle male die 1 6 is now passed on and-strips the blank olf the die 15, and ressesit through the upper female die, whic is of less diameter than the lower fe- As shown in the drawings, the female dies are of progressively decreasing diameter.

The centering arms 3 9 are pivoted at 45 to thefemale die cas'e or holder, and are connected by links 46 to the piston rods of cylinders 3 What I claim herein and desire to secure 1. In a machine for forming a seamless tube progressively from a blank of metal in a continuous pass through a plurality of female .dies of decreasing diameter, the combination with stationary female dies and movable male dies, of holders carrying the male dies adapted to swing upon the framework of the machine toand from the line of coperation of the dies and'suiiciently clear of the frame-work to place the blank upon the dies.

2. vIn a machine for forming a seamless tube progressively from a blank of metal in a continuous pass through a plurality of female dies of decreasing diameter, the combi nation with stationary female dies and movable male dies, of holders carrying the male dies, and means for simultaneously swinging said holdersclear of the frame of the machine to place the blank upon the dies. i

3. In a machine for forming a seamless tube progressively from a blank 0f metal in a continuous pass the combination of a series of -movable male dies and stationary female dies, swinging holders carrying the male dies for locating the blank to be operatednpon, a pressure cylinder and means actuated thereby to control the position of the ldie holders.

4. In a machine for forming a seamless tube progressively from a blank of metal in a continuous pass through a plurality of vertical female dies of decreasing diameter, the combination with male and female dies of centering pawls or arms connected with a dies and arranged to bring the blank into line with the center ofthe operating dies bestationary die casing carrying the female'.

fore the said dies start to reduce the said i movable male dies, means for advancing the male dies successively, and lauxiliary means for supporting agiven male die after it has j completed its work and after the main pressure has been removed therefrom.

In testimony whereof I affix my signature in presence of two witnesses.y

CAMPBELL P. HIGGINS. 

